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Monday, 09 June 2003 02:33

DSP Educational Package

Written by Masood Khosroshahy

This package was designed to serve as an educational aid package for the DSP course.

Thursday, 10 April 2003 20:48

QPSK Modulator/Demodulator

Written by Masood Khosroshahy

This circuit is an improved version of classical QPSK modulator/demodulator designs in terms of costs. Based on common CMOS logic, it needs no frequency or phase adjustments.

 

Fading is one of the important obstacles which limits the wireless transmission. Deep fading will cause loss of signal at the receiver. The transmitted signal will arrive at the receiver antenna through multiple paths which causes what is known as multipath fading. Each path has its own delay and attenuation and the received signal amplitude is the collective effect of the signals arrived through different paths.

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